Multispindle screw-machine.



E. C. HBNN. MULTISPINDLE'SGRBW MAGHINE.

APYLIOATION FILED FBB.10,190B.

' Patented Feb. 14, 1911.

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s Q, HTVUJ Patented Feb. 14, 1911.

h E..C.HENN. :MULTISPINDLE .SCREWv MACHINE.

ATPLIOATION FILED TBB. 10,1908. v j

' l Patented Feb. 14, 1911..

unifi' nn srirrns iiurrnN'r onnion.

EDWIN C. HEN". OF CLEVELAND,IOHIO. AS

SIGNOR TO THE NATIONAL-ACME MANU'- FACTURING COMPANY, OF CLEVELAND, OHIO. A CORPORATION 0F OHIO.

MULTISPINDLE SCREW-lfrfiCHINE.

Specification of Letters Patent.

rat-.entail Feb. 14, 1911.

Serial No. 415,039.

Application filed Febiuary 10, 14908.

of the automatic type. in which tliereis a series of spindles carrying the rods to be operated upon and which are Simultaneously engaged. bv various tools thatperform the successive operations to produce the screw or other product.

The object ot the invention to provide ,in this class of machine improved means for engaging' and releasing the actuating' mechanism for rotating' the stock spindles.

In the aeeonipanvnigl lran'11ng's',l represent ing a multi plc spindle' screw machine em- -hod'vinp' my invention. Figure l afront elevation of the machine; Fig. Q is a longitudinal section through one ofthe-screwrod spindles. ,showing the clutch and other details; Fig is a side elevation of the parts shown iu Fig. 2; Fig. i is a view showing enlarged' part of the clutch shown in Fig. 2) with the operating' and loc-.king details g Fig. 5 is alsection ou the 'line 5-5 shown in Fig. Lt; Fig. il is a detail elevation showing part of the inci'hauisn'i for operating the clutchshon-'n in Fig'. Figi'. T is a side elevation of parts shown in' Fig. (l: Fig'. 8 is a section on the line shown in Fig'.

The machineis shown as having a bed B supported in an)Y suitable manner. and a tool carrier `ll is` suitahliY supported. for horizontal mm'e'ment. But the carrier may have three other tools mounted thereon equidistant from the main driving shaft' 3 and separated a quadrants distance.

The machine is shown-as provided with a series of' Work-carrying spindles denoted generally hi' (l. These, spindles are identical in construction and' operation, and one o'l them is shown eijilarged in detail in Figs. i. El and .l. "l'iesespindles are placetha piaffliantis distance apart and in a circular series aroui'id the main driving' shaft 3. Suitable means are provided for rotatably supporting these four spindles. whereby the.)Y can he interiniltentlyladvanced in one diret tion of rotation so that the rods in the ser eral spindles will be successively presented another, No. 655,971. August 14. 1900.

eiprocatorv movement Within t-he sleeve vin alinement with the die. iu the tool carrier.

llueh of the stoel: spindles carries a driving' gear S), all of which mesh with a gear 'l0 fast on the main driving shaft Suitable indexing means eil'eets' this intermittent advance of the stock spindles and locks them in the proper position. lhese mechanisms form no part of the present inveutionand need notl be described-hilt may be of the character set forth in patent to myself and These stock spindles, as particularly shown in Figs. Q to comprise a chuck sleeve 12 supported in the earner and having at the inner Working' endthereofan internally flared chuck-compressing head 13, and a compressible collet o r chuck 14 supported for re`- and having a tapered face corresponding with the internal face of the head 13 whereby7 the latter is clamped on the rod inclosed therein. A tubular thrust. member 15 Ais supported to reciprocate in the sleeve lf3 with Iits outerA end in position for eulci'agincv the inner end' of the chuck to advance the latter to its clamping position. The thrust member has at its opposite end a collar 'and' a pair of thrustrod actuating ,fingers 1G and 1G pivotallv supported on arms fixed to the collar 17 secured to this end ofthe' sleeve 12.V Each of' the fingers is somewhat L-shaped and their outer ends engage the outer end of the grooved collar 20 lof the thrust member that is loosely mounted on sleeve 12'to recipro-4 cate. and having a conical end cooperating' with the fingers l'and 16',` the conical end .serving to spread. the, ends and impart a forward movement to the thrust member. An actuating lever 21 pivoted on the frame of the machine has a pin entering the lgroove in the collar :'20 when the collar arrives in cooperative' relation with the lever, and a cam C2 fixed to the cam shaft has straps arranged to engage this lever and rock it at the proper time.

`The, means for feeding the 'screw rod in the 'spindle consists of a clamp sleeve 22 supported Withint-he thrust member l5 havino at the outer end a grooved head 23. A lever 24 pirotod on the machine is suitablj)T operated from the. cam drum at the proper time. to engage the groovecl head 23 and re- .eiprotmtetlie same.' When the collar 20 is shifted tocause the arms'lt and 16 to open and release the rod in the clutch 14. the

gripping member'. 22 is moved endwise to advance the rod. lThereupon the'head 20 is shifted in the other direction to again grip the r'od by the clutch jaws-14,'when the sleeve 22 is returned to its former position -52 will' serve to swingthe lever-'49. f But its rollerO engaging the stop.. 51;; willgive the.

without shifting the rod. V.

ALs-before stated, the gear 9 is in all posi-v tions of the spindles in mesh with the gear 10.011- the driving shaft, and, hencewll bev continuously rotated. Suitable-clutch mech-4 anism is provided for .locking the gear 9 to the Spindle l2 and releasing the' same at" the properftimes. ."This clutch mechanism is shown as comprising a sleeve 25 splined to the spindle 12, and the gear 9 is freely rofl tatable on this sleeve. The gear carries 'on one face a series of clutch teeth 2G arranged to engage a series of clutch .teeth 27 on a clutch member 28 'that is slidable on 'the spindle.

sleeve 25 but prevented from rotating'thereon, by a spline 29. is normally pressed into engagement with the clutch teeth on 'the gear 9 by springs 30 pressing thereon and also engaginga disk By this means the gear- 9 is normally locked to rotate the When it is desired to diseng-age the gear from the spindle and arrest one of the spindles in the position for cutting the thread, a leveror yoke 32 is provided rotatable in a journal plate 33 mounted on the spindle head. This yoke comprises a shaft 3'4- ha'ving two varms 35 and 36 carrying rollers'' and 38 that engage the flange 39 ofthe clutch member 28 and press the latter away from the gear 9 to disengage the clutch teeth, thereby' .freeing'thestock spindle. In order to positively arrestthe stock spindle and 'hold it stationaryv ,when the clutch vmembers are disengaged, a spring pin 40 isv carried by the member' 33 1n position -to engage suitable teeth '41 on the flange 39 when shifted Ato disengage the clutch members by the. yoke arms. ."Means are provided for swinging this .yoke 'when' thel tool 'spindle arrives at'the thread-cutting position, to

open this clutch, and also'toclose it'at the.

proper time in vthe threading operation. Means for; this purp'p'se are shown-in Figs. 6,' 7 and 8 asfcomprising'a lever 42 hi'r1ged i toa block 43 carried by the. machine, and

- gagesuitable strapson a cam.;drum 45, that' having-at its lower end 'a -.roller 44 '.to en- '-with the rollerA adjacent the` surface of the drum, from which position itis' swung'out- Ward by astrap o rca-m 45, the drum' rotating in-th'e direction of thearrc'mi.v -The 604 lever is locked in this position until, by the The clutch member 28v oted a llever 49- carryinga roller 50 that imp ingcs on al1/inclined. stop 51.A A dink-52 cnnectsthe' lever withlrfga hinge block .53 pivoted onthe lever 42;.: By this means, when thehlever 42is vsvv-ungthe link 'lever 49 an endwise movement that will swing the arm 48 and. rock the yoke memberv in one direction. 'Fo-.limiti this movement. of the lever 4.2,- which is bythe cam strap '45', a spring 'latchf-.ispivoted .on the frame and engages astop pin 5 4 carried by lever 42.. A lug' 55 :on the latch engages the 'pin 54 and limits the inward mvement of' this part of the lever. When the'lever42 is swung in 'the' opposite' direction, by i' the cam strap 45, a hook arm 5.6 on thelever.

42 Aengages a hook arm 57 fast tothe shaft 34, and thereby returns the yoke to its ncrv mal position. When the lever 49 is swung fr'cm-the lever 42 it will pass. beyond the in- L clined surface of the stop lt'o'an end sur; face 58' that will lock the lever- 49 in this 1 position 'and prevent shifting' of 'the yoke until the lever'42 is'again swung. But, be-

from this abutment surface. Thereupon the position.

.hook arms return the yoke to its former J5 Having thus.described..myA invention, I

claim:

-1. In amultiple spindle screw machine, thecombination with adrivingshaft, a canv rier having a series -of stock-holding spinv dies, the carrier vbeing rotatahlysupported forintermittently swinging'c'the spindles to consecutive circular- .pos1t1ons, -a driving 'member carried'by each .ofthe stock spindles that is .constantly'rotated froml said shaft in all positions of 'the stock spindles, and a member on :each spindle shiftable to connect and disconnect. the spindle with the driving member to rotate the sameof mechanism arranged-to 'engage each of the .drivngmembers when its spindle is brought to a certain position of the orbit of the spindles to positively. shiftthe driving member to engage and. te release the stock spindle, said mechanism comprising a lever pvoted on ,the-maehinala cam drum, a cam on.- the tio-engage and swing thelever inone direction, a second-cam on the drum to engage the lever and4 swing .it back in the opposite direction, a stub shaft rotatable in the frame', an arm onsaid shaft' arranged to engage said drivingmemberto shiftit vtoengage. the. spind1`e,.means to disengagei- 'the driving member when the said arm. isf` retracted, a'second' arm carried by said shaft arranged toenga'ge a -portino saldfleyer direction, a third ar'm .seeured onsel shaft, a lever .rivet/dto .Saldfthlrd @mensenwwhereby the' arm and shaft 'arel'swungiiff-rime i 'vegan l 3 tions between'said .operating leerand the leverv on the third arm whereby the said lat- 'ter leveris swung fromV the. ormer,jand an -inclined abutment arranged toen age the 6 freesed of thelever o'n the' `thir Harm tofcanse endwise movement of sch lever 'whenl litfisswrmgiby saidoperating'lever to eiect 'l the-"fswlig ofjsaid third' ann and, the' stub shaft li-nl'fone direction, tbestub shaft being v1o. Swengginfthe other direction by the engage mentof' said Vsex'solid-'arm by the operating '-levet'.;j e

, Y multiple s 1n le "sereni rnagzliili@V cartier being' rotatably 'snpperted ier inter- M mittently swinging thefsp" dles to consecutive circular l carriedby Seac of the. stoek spindles that 20` is cdnstantly rotatedfjrom vsaid 'shaft inv allV uggsitionsof thestock-'s irniles,` and a mem'- on-'each spindle zbletoconnectand ositions, a riying member :cliseonnect the spindlevwijdigtlie driving mem- .tanposition-:ofthe orbit of'thejspindles to @positively 'shift the vdriving memberto engingev and -to release the stock spindle,said

.W'mecbansm comprising "af lever pivoted on 'Q -the machine', a cam drum, e camion-the 'f to engage and 'sw-ing the lever Vin one; v 1 'dirlex'xtion,"e'.A second oem on the drum to en?" .thelever and vswing it baokinthe-op#- d iter, direction, a stub: .shaft `A-rotaa-ble in on said shaft-arranged e eine,

een. Smid,I operating leverand .the he third .arm whereby the .said

ei'sfbrolightto a cerisengage ond camgoni th iv-ing r member .vflwn tbe i'sa'idffarm 'sl' "ted,1a second arin `carried by s'aidshait f to engage fs;l portion-"of saidj-lever er; ivpted Ito said arm, connes-x rlever, Vs. swungfom the former, and Y.

lined .abutment M arranged Vto engage' 4thel'free end 'of ltbeie'ver on the thirdv erml to causeendwise nfiovement l of such lever '50 when. it 1 s.V swung by said operatingever'to l eiect the swin'g of said thirdarmv- Yand thel stub-shaft in one direction, th 'stubshaft "eratin '."levergjsaidabntment havinga trans'-l .verseg ace 'for locking ythe saidltliirdileyer d against 'endwise movement toil Vretain' thersub1shaftimieshifed.beisamme- '.traet'ed byth engagement-ofthe perating ,60

Engagement@ sei leverririthnithe 4second arm.-

the combination `n itli a' driving. sh'aift,V apar-1g rier-having a series -of 'stock-holding'spin dle'sgftlez-carrier being rotatably 'supported "65 for;V intermittently' swinging Vtbe spindles 5to )consec' tive circular positions, "a' driving membercarrie'd by each cfpthestock s i-ndies; meansf for constantly rotating the riv ing member from-said sliatsin all positions 70 of the stock spindles, and a member on 'eaehfr spindleshiftableto connect and disconnect the spindle with the driving member to -ro tete the same;` mechanism arranged to en' gage eaelrof the drivingvmembers when its 7,5'. spindle is brought to' a ,certain vpre'determined-position/,ofrthe orbit of the spindles to positively shifttlie driving member .in

bone',1 direction to engage. and to shift the' drlvingme ber in another, direction to-re- A8D Aleafse the-stock spindle,rsaid mechanism in- -oluding an'V o eratingflev'er, a cam drum, -a' i cani-'onthe rum arranged to enga le and."

r mea-'ns tof-enI age the lever and lok it ageinst movement: nung/.the shifting of the stock/90 spindle carrier to bring another stock spin` *Idle to said certain position. d

3..,1111@ mena-pie; Spindle Seeav machins,

i e drumarrangedto vswing the 4 letter-"in, ,another 'direction -tol eieet Y the dis- EDWIN o. Henny 5 Y 

